New Hampshire Route 9

New Hampshire Route 9
Map of southern New Hampshire with NH 9 highlighted in red
Route information
Maintained by NHDOT
Length:	109.910 mi (176.883 km)
Existed:	1925 – present
Major junctions
West end:	VT 9 in Brattleboro, VT
	NH 10 / NH 12 / NH 101 in Keene US 202 in Hillsborough I‑89 in Hopkinton US 3 / US 202 in Concord I‑93 in Concord I‑393 / US 4 / US 202 in Pembroke US 4 / NH 43 in Northwood US 202 in Barrington Spaulding Turnpike / NH 16 in Dover NH 4 / NH 108 in Dover
East end:	SR 9 in Berwick, ME
Location
Counties:	Cheshire, Hillsborough, Merrimack, Rockingham, Strafford
Highway system
New Hampshire Highway System Interstate U.S. State Turnpikes ← NH 4 NH 10 →

New Hampshire Route 9 (abbreviated NH 9) is a 109.910-mile-long (176.883 km) state highway located in southern New Hampshire, United States. It runs across the state from west to east and is a multi-state route with Vermont and Maine, part of 1920s-era New England Interstate Route 9.

The western terminus of NH 9 is at the Vermont state line in Chesterfield, where it connects to Vermont Route 9. Its eastern terminus is at the Maine state line in Somersworth, where it connects to Maine State Route 9.

Much of NH 9 (about 45 mi or 72 km) runs concurrently with U.S. Route 202 on its journey across the state.

NH 9 begins in the west where VT 9 crosses the Connecticut River from Brattleboro, Vermont, into Chesterfield, New Hampshire. The highway meanders its way through the large town (by area) en route to Keene, home of Keene State College. NH 9 enters the southern part of the city and intersects with the triplex of NH 10, NH 12, and NH 101, the latter of which has its western terminus here. NH 9 joins NH 10 and NH 12, bypassing downtown Keene to the west. After about a mile, NH 12 splits off to the northwest. Two miles later, NH 10 follows suit and NH 9 continues northeast, crossing through parts of Roxbury, Sullivan, and Nelson en route to Stoddard, where NH 9 intersects with NH 123. The two routes overlap for about a mile before NH 123 splits northwest, while NH 9 continues east. The highway passes along the northern edge of Antrim, intersecting and overlapping with NH 31. The two routes cross into the town of Hillsborough, where NH 31 splits off to the northwest and NH 9 becomes a semi-limited access highway (not quite up to super-two standards due to a number of at-grade intersections). 1 mile (1.6 km) later, NH 9 interchanges with US 202 and the two routes form the first of two lengthy concurrencies. US 202 and NH 9 bypass downtown Hillsborough to the north, as well as the neighboring town of Henniker, before entering Hopkinton. US 202 and NH 9 intersect NH 127 near the town line and continue east to one of two partial interchanges with I-89. The first interchange allows the following movements: US 202/NH 9 east to I-89 south, US 202/NH 9 west to I-89 north, I-89 north to US 202/NH 9 west, and I-89 south to both directions of US 202/NH 9. The highway continues into town, intersecting the southern terminus of NH 103 (a secondary highway paralleling I-89 north) before intersecting I-89 again, with southbound-only access to the Interstate highway. US 202 and NH 9 enter the city of Concord from the west and roughly parallel I-89 until reaching downtown. The two highways intersect the northern terminus of NH 13 before meeting U.S. Route 3 in downtown. US 202 and NH 9 turn north onto US 3 for about six blocks before NH 9 turns east onto Loudon Road, intersecting with I-93 (US 202 continues along US 3 to meet Interstate 393 just to the north). NH 9 runs as Loudon Road parallel to I-393 (which also carries US 4 and US 202), with access possible via NH 132 (East Side Drive) and NH 106 (Sheep Davis Road - NH 106 is also the route to New Hampshire Motor Speedway, which lies about 9 miles (14 km) to the north). NH 9 crosses underneath I-393 and enters the extreme northern tip of Pembroke.